3761640

Information

• Patent Grant
• 3761640

• References
• Source

• Patent Number

  3,761,640

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1973
  51 years ago

• CPC

  • G06F3/02 - Input arrangements using manually operated switches
  • H03K3/72 - with means for varying repetition rate of trains
  • H03K3/78 - Generating a single train of pulses having a predetermined pattern
  • H04M1/2725 - using electronic memories
  • H04M1/30 - Devices which can set up and transmit only one digit at a time

• US Classifications

  • 379 - Telephonic communications